The GROCO ARG-2500-S Raw Water Strainer is a high-capacity 2-1/2" NPT filtration unit designed for large marine engines and generators. The "-S" designation indicates it comes equipped with a 304 stainless steel basket, providing a balance of durability and value for standard marine environments.

Reliable Protection for Large Engines

The ARG series is favored by marine professionals for its tie-rod-free design, which eliminates common leak points found in traditional strainers.

• 304 Stainless Steel Basket: Offers excellent filtration for debris and is highly resistant to corrosion in fresh or brackish water.

• High Flow Efficiency: Maintains an 11:1 open-area ratio, ensuring your engine receives a consistent volume of cooling water without restriction.

• Durable Bronze Head: The main housing is cast from heavy-duty bronze, providing a professional-grade foundation that stands up to high-pressure marine plumbing.

• Tool-Free Servicing: Features a spin-off wingnut cap and a quick-release mounting strap, allowing you to clean the basket in seconds without needing a wrench.

Technical Specifications

• Pipe Size: 2-1/2" NPT (Threaded)

• Height: 17.0 inches

• Basket Material: 304 Stainless Steel

• Sight Glass: One-piece molded acrylic for a clear, vacuum-tight view.

• Certifications: UL Listed 255-D.

Maintenance Note

For seasonal maintenance, this unit uses the ARG-756 Drain Plug (for units built after 2008). If you are operating primarily in high-salinity seawater, you might consider the Monel basket version (ARG-2500) for even greater corrosion resistance.